Appendix B—Serial Communication Technical Details
Tau 640 User’s Manual
B-10
June 2011
TAU-0640-00-10, version 110
0x70
P
A
N_AND_
TIL
T
Gets
a
n
d
s
e
ts
th
e pa
n po
sitio
n
(
x a
xis)
an
d th
e tilt p
o
s
ition
(y
a
xis
)
wh
en th
e
ca
me
ra
is
in
zoo
m
ed
mo
de. T
h
e limits o
f pan
a
n
d tilt
p
o
sit
ion
s
ch
an
g
e
w
ith
a
ch
an
g
e
in
zoom
set
ti
ng
(
s
ee VI
DEO_
MOD
E
0x0F)
.
Get
C
m
d: 0
N
one
Set Cmd:
4
&
Re
s
p
: 4
Byt
e
s
0-
1
:
T
ilt
po
si
ti
on
i
n
ro
ws
r
e
la
ti
ve
to
th
e ce
nte
r of th
e a
rr
a
y.
±12
8
—
2
X zoo
m
±19
2
—
4
X zoo
m
±19
6
—
8
X zoo
m
B
yte
s
2-
3: P
a
n p
o
sit
ion
in
co
lum
n
s
re
lat
ive to
th
e cen
ter
of th
e ar
ra
y.
±16
0
—
2
X zoo
m
±24
0
—
4
X zoo
m
±28
0
—
8
X zoo
m
0x72
VIDE
O_S
T
ANDARD
Get
s
or
se
ts
th
e
v
ide
o
st
an
d
a
rd
(a
ff
e
c
ts fr
am
e
r
a
te
).
Get
C
m
d: 0
N
one
Set Cmd:
2
&
Re
s
p
: 2
0x0
0
00
= NT
SC
0x0
0
01
= P
A
L
0x79
SHUTTER_POSITION
O
p
ens
or
closes
the s
h
utt
e
r
Get
C
m
d: 0
N
one
Set Cmd:
2
&
Re
s
p
: 2
Sh
ut
te
r p
o
s
itio
n
0x0
0
00
= open
0x0
0
01
= c
lose
0x2C
DDE
_GAIN
S
e
ts
th
e gain
of
th
e DD
E fi
lt
er
(in
p
u
t o
n
ly in
ma
nu
al mo
de.
In
a
u
toma
tic
mo
d
e
th
is is
s
e
t in
te
rna
lly).A D
D
E_
GA
IN set
ting
of 0
turn
s off DDE an
d bad pixel re
placemen
t.
Get
C
m
d: 0
N
one
Set Cmd:
2
&
Re
s
p
: 2
G
a
in
va
lu
e
(
0
x0
0
0
0 to
0
x00
F
F
)
0xE2
DDE_
T
HRE
S
HOLD
Se
ts th
e
th
re
sh
old of th
e
D
D
E
filt
er (in
p
u
t
o
n
ly
in man
u
a
l mode. In
a
u
toma
tic
mo
d
e
th
is is
s
e
t in
te
rn
a
lly).
Get
C
m
d: 0
N
one
Set Cmd:
2
&
Re
s
p
: 2
Th
re
s
h
o
ld va
lue
(0
x0
00
0 t
o
0
x00FF)
0x
E3
SP
A
T
IAL_THRESHOLD
Gets
o
r s
e
ts
the
s
p
a
tia
l
th
re
sh
o
ld of th
e DD
E filte
r a
n
d th
e DD
E
mode (
a
ut
o o
r man
u
a
l)
Get
C
m
d: 0
N
one
Set Cmd:
2
&
Re
s
p
: 2
Byt
e
0 = T
h
re
sh
old
(
0
x00
0
0
to
0x00
0F)
Byt
e
1 = Mode
0x
0
0
00
=
man
u
a
l
0x
0
0
01
=
au
to
0xDB
G
A
IN_SWITCH_
P
A
RAMS
Ge
ts o
r s
e
ts
t
h
e po
pu
la
tio
n
(a
s a
per
c
en
ta
ge)
an
d tempe
ra
tu
re
(in
d
e
g C)
th
res
h
o
lds
fo
r h
igh/
low ga
in s
w
itc
h
ing
Get
C
m
d: 0
N
one
Set Cmd:
8
&
Re
s
p
: 8
Byt
e
s 0-1: hiT
o
Lo
Th
res
h
o
ld
Byt
e
s 2-3: hiT
o
Lo
Pop
u
la
tio
n
Byt
e
s 4
-5
: loT
o
H
iT
h
re
sh
old
Byt
e
s 6-7: lo
To
HiPopula
ti
o
n
Ta
ble
B
-4: RS232 Function Cod
es
Fun
c
ti
on
Code (hex)
Command
Descr
ip
ti
o
n
By
te
C
o
u
n
t
Ar
g
u
me
nt
(i.e
, D
a
ta Byte
s) (he
x
)
Note
s